In lang=en terms the difference between exchange and flow
is that
exchange is to replace with, as a substitute while
flow is to discharge excessive blood from the uterus.
As nouns the difference between exchange and flow
is that
exchange is an act of exchanging or trading while
flow is a movement in people or things with a particular way in large numbers or amounts.
As verbs the difference between exchange and flow
is that
exchange is to trade or barter while
flow is to move as a fluid from one position to another.